The BTX I'm running right now is a $20 Optiplex 380 MT. This was a low end 2 core 4GB system. But they forgot to give it a 95W CPU limit, and the G41 chipset supports the LGA771 mod. So here it is with an X5470 3.33GHz, 2x4GB DDR3 1066, and MSI GTX1060-3Gb.https://www.userbenchmark.com/System...iPlex-380/1942
It took a modded BIOs to do it. maybe the modded BIOS supports a QX9650? If so then some overclocking might happen. It didn't work when I first tried it.
It can run the Superposition benchmark at 60fps on 1080P medium setting.https://benchmark.unigine.com/result...5f5fe38c56c90d
Some of my runs have a slight SetFSB overclock and some don't, so the CPU score varies a little. All the Opti 380/X5470 runs are mine at userbenchmark.